Malicious PDF — malware analysis report

Static analysis result for SHA-256 dede4622ed2de9c2…

MALICIOUS

PDF

57.7 KB Created: 2020-08-24 11:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0add082435bb9ece8062e14403f05bb SHA-1: 5f40bd129c8b77716b00d85bc32392b3f23aad53 SHA-256: dede4622ed2de9c2bd226ee6904c7cb895d5a91eca472612714d5f80e3e89eb8
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a redirector known for malicious activity. The document body, though heavily obfuscated, contains text related to 'Autocad 2007 crack file free' and a URL that aligns with the malicious redirector. The presence of a visual download button lure further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=autocad+2007+only+crack+file+free In PDF document text
    • http://lefawel.fadedaf.shop/uploads/1/3/1/4/131406436/8789696.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2041/1289/files/tixuxebenuworufun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/15161759882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6667/8696/files/1416731191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6878/3768/files/wudosakajajibisenofegewal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3465/2321/files/eating_disorder_powerpoint_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/laporan_gastropoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3459/0614/files/maths_book_for_class_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/kixeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2063/1720/files/posepowififebezasusoj.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C5 5228 bytes
SHA-256: f074f8addfdd1e56c78ee82ec88b947b8c59531b61a8bd4d67bc843ceec20cff
font_01_sfnt_off000099a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99A5 19580 bytes
SHA-256: 3dc66c31803b3fdbfe3b47c6e203634c7800573db3ab55ea1c11a416efb80cc2
font_02_sfnt_off0000cc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC39 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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